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What are the methods to improve the hardness of machine body castings?

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[Abstract]:
The machine body casting is mainly used to make the blank of the machine parts, which can play the role of fixing parts or guiding.
  The machine body casting is mainly used to make the blank of the machine parts, which can play the role of fixing parts or guiding. The material is required to have strong hardness during use, and the hardness condition of the part should not be reached. We can Take the following conditions.
 
  In order to improve the hardness of the casting body of the machine, we can adjust the temperature of the casting. The hardness of the casting is related to the temperature of the molten iron. The air supply strength is increased, the bottom coke combustion is strengthened, and the superheat temperature of the molten iron is increased. Modification, improve the air supply strength, make the bottom coke fully burn, so as to increase the temperature of the molten iron, and also reduce the production cost, and the choice of metal, the better the metal strength, the more uniform the structure, the smaller the hardness fluctuation At the same time meet the hardness quality standards.
 
  The machine body castings improve the mechanical properties of the castings by improving the mechanical, physical and chemical properties of the castings through some methods to improve the intrinsic quality of the workpieces and improve the production efficiency and quality.
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